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MFSKsymblerate
介绍了如何利用FSK信号的小波脊线，进行FSK信号的符号率估计(the estimation of symbol rate for FSK signal)
- 2009-09-04 11:21:22下载
- 积分：1
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curvelet
说明： curvelet工具包2.0版本很好的图象处理工具
是很不错的图像处理工具，对做图像处理研究的人很有用处。(curvelet Toolkit version 2.0 very good image processing tools is a very good image processing tool for people who do image processing research useful.)
- 2010-03-21 17:10:29下载
- 积分：1
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Cloud-computing--architecture-.ppt
云计算技术与架构前瞻
云计算的市场前景
云计算的现状
云计算的技术、架构发展趋势(Cloud computing technology, the status of the market prospects for technology and architecture forward-looking cloud computing cloud computing cloud computing architecture development trends)
- 2012-08-19 20:00:37下载
- 积分：1
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fx
说明： 飞行学院信息化建设的探讨与总结，希望对别的学校有所帮助(Flight School information construction discussion and conclusion, want to help other schools)
- 2009-10-16 10:50:25下载
- 积分：1
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llc
四篇非常棒的关于LLC电源的硕士论文，每篇都是完整的，有空可以慢慢研读一下。后缀格式是.nh，请用cajviewer打开(4 great power on the LLC' s master' s thesis, Each are complete, the empty can take the time read about. Suffix format. Nh, please open the cajviewer)
- 2009-12-01 17:48:12下载
- 积分：1
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Gear-method
了解吉尔法解常微分方程组的数学方法，并熟悉它在实际中的应用。(Jill law understanding of ordinary differential equations solution of the mathematical methods, and are familiar with it in practical applications.)
- 2021-03-08 11:29:28下载
- 积分：1
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biyesejitognxinxitong
中文摘要
正交频分复用（ OFDM ， Orthogonal Frequency Division
Multiplexing）是当前一种非常热门的通信技术。它即可以被看作是一种
调制技术，也可以被看作是一种复用技术。由于它具有抗多径衰落和频谱
利用率高的特点，因此被广泛应用于高速数字通信领域，比如应用于IEEE
802.11a无线局域网（WLAN）的物理层等等。
我的毕业设计的核心任务是：采用 FPGA 来实现一个基于OFDM 技术
的通信系统中的基带数据处理部分，即调制解调器。其中发射部分的调制
器包括：信道编码（Reed-Solomon 编码），交织，星座映射，FFT和插
入循环前缀等模块。我另外制作了相应的解调器，可以实现上述功能的逆
变换。
另外，我还对OFDM技术， IEEE 802.11a的标准文献，基于Simulink
的 OFDM 模型和仿真，ALTERA 公司的技术和 IP Core 的使用等方面进
行了研究。这些在文章中都有体现。
(Abstract
Orthogonal frequency division multiplexing (OFDM, Orthogonal the Frequency Division,
Multiplexing) is a very popular communication technology. It can be seen as a
Modulation technique can also be seen as a multiplexing technique. Because of its resistance to multipath fading and spectrum
High utilization characteristics, and is widely used in high-speed digital communications, such as used in IEEE
802.11a wireless LAN (WLAN) physical layer.
The core mission of my graduation project: FPGA to implement a technology based on OFDM
Communication systems in baseband data processing part, ie the modem. These emission part of the modulation
Includes: channel coding (Reed-Solomon coding), interleaving, constellation mapping, FFT and interpolation
Into the cyclic prefix modules. I also produced a corresponding demodulator can achieve the inverse of the above functions
Transformation.
In addition, OFDM technology, the IEEE 802.11a standard literature, based on Simulink
)
- 2012-05-20 21:58:18下载
- 积分：1
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DFIG
关于DFIG的低压穿越能力的研究。对以后实现低压穿越做一些探索性的工作(Along with the sharp increase in the proportion of wind power supply some areas the impact of Large-scale wind farms for the stability of regional power grid is more significant. The research on low voltage ride-through (LVRT) of wind power system based on doubly-fed induction generators (DFIG) becomes a hot issue. In this paper ,Firstly introduces the concept of low voltage ride-through technology, The standards of LVRT of some European countries are presented, And then analyses and compares the kinds of common realize low voltage ride- technology and improve control strategy. The transient characteristics of DFIG when the grid voltage sagging.)
- 2012-03-18 16:18:38下载
- 积分：1
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jaifanghangyefenxi
2012-2016年中国家纺行业市场分析与投资前景预测报告(Chinese textile industry market analysis and investment outlook report 2012-2016)
- 2012-12-15 00:14:20下载
- 积分：1
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ppt
本PPT着重研究了当前手游行业推广渠道的各种方式以及每种方式的利弊(The PPT focuses on the current hand travel industry marketing channels as well as the various ways the pros and cons of each approach)
- 2013-08-21 17:14:05下载
- 积分：1
